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Square D RKA36120CU44A - Molded Case Circuit Breaker 1200A 600V

Square D
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Square D RKA36120CU44A is a 1200A molded case circuit breaker designed for primary overcurrent and ground fault protection in industrial power distribution systems. This three-pole unit operates at 600VAC with a 65kA interrupting capacity at 480VAC, utilizing solid-state LSIG trip technology for precise long-time, short-time, instantaneous, and ground fault coordination. The breaker features an I-Line style plug-in connection, weighs 52.001 lb, and measures 16.24 in (412.50 mm) in height, 16.54 in (420.12 mm) in width, and 14.49 in (368.05 mm) in depth, accommodating wire sizes from 4 x AWG 3/0 to 600 kcmil aluminum/copper or 4 x AWG 3/0 to 500 kcmil copper. It complies with UL, CSA, NEMA, NMX J-266, and IEC 60947-2 standards, with additional NOM certification. Typical applications include main or feeder protection in switchboards, panelboards, and industrial control panels requiring high-current, three-phase distribution.

Key Features & Specifications
  • Type: Molded Case Circuit Breaker, Solid State Trip
  • Voltage Rating: 600V AC
  • Current Rating: 1200A
  • Dimensions: 16.24 in (412.50 mm) x 16.54 in (420.12 mm) x 14.49 in (368.05 mm) (Height x Width x Depth)
  • Standards: UL, CSA, NEMA, NMX J-266, IEC 60947-2
  • Applications: Industrial power distribution, main or feeder protection
  • Poles: 3
  • Phase: 3
  • AIC rating: 65kA@480V
  • Connection: I-Line Style Plug-In
  • Protection: LSIG - Long-Time, Short-Time, Instantaneous and Ground Fault
  • Wire Size: 4 x AWG 3/0 to 600 kcmil aluminum/copper; 4 x AWG 3/0 to 500 kcmil copper
  • Certification: UL, CSA, NOM
  • Weight: 52.001 lb


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